We don't have synonyms for megalops yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are megaflops, aegilops and megalopa.
(n) :
(zoology) A larva, in a stage following the zoea, in the development of most crabs. In this stage the legs and abdominal appendages have appeared, the abdomen is relatively long, and the eyes are large.
(n) :
(zoology) A larva, in a stage following the zoea, in the development of most crabs. In this stage the legs and abdominal appendages have appeared, the abdomen is relatively long, and the eyes are large.